TW519790B - Simplified fly-back synchronous rectifying power supply - Google Patents
Simplified fly-back synchronous rectifying power supply Download PDFInfo
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- TW519790B TW519790B TW089114974A TW89114974A02A TW519790B TW 519790 B TW519790 B TW 519790B TW 089114974 A TW089114974 A TW 089114974A TW 89114974A02 A TW89114974A02 A TW 89114974A02A TW 519790 B TW519790 B TW 519790B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
Description
519790519790
(一）發明技術領域·· 種簡易型返馳式同步整流電源供應 一電阻之設置作為原母案之電流偵 本發明係有關於一 器追加二，主要係運用 測器者。 (二）發明技術背景·· 上功率切換開關元件製程技術之進步，加 供庫薄ρ二ί ί益電路拓樸之變化運用’使得切換式電源 供應器已經成為電源供靡 電器設備及電子儀哭等；：之主要技術’纟其現今電腦、 用之電源供應器能r推陳出#，皆要求所使 .^ , /、備％弋、輕巧、高效率及低成本，更 加使j換式電源供應器成為電源供應器之技術主流。 效六^ :月追加一主要係改良原母案之簡易型返驰式同步 整„應器（申請曰為：民國八十九年七月二十七 :& =案唬· 89 1 1 4974 )以及原母案之簡易型返馳式同 步整=源供應器追加一（申請曰為：民國八十九年九月 五日）專兩種技術中之電流偵測器。如圖一之所示，即為 原母案之簡易型返馳式同步整流電源供應器的主要實施電 路圖對於圖一所揭示之原母S，乃係提供一種簡易型返 驰式同步整流電源供應器，主要係藉由運用返馳式切換電 路2 0 0之配合使用電流偵測器4 〇 〇與同步整流電路3 〇 〇之作 用、，而偵測主變壓器T1之次級線圈電流大小，以控制同步 整流^路30 0輸出訊號。之脈寬，進而控制同步開關μ之 工作時間，達成與二極體D2同步導通之作用，有效提高電(I) Technical Field of the Invention ... A simple type of flyback synchronous rectification power supply. A resistor is set as the current detection of the original case. The present invention relates to the addition of two devices, mainly for those who use detectors. (II) Background of the invention ... The advancement of the process technology of the power switching switch element, and the change in the use of the circuit topography, make the switching power supply has become a power supply for electrical appliances and electronics. Cry, etc. :: The main technology '纟 its current computer, the power supply can be used to push out #, all require the use of. ^, /, Backup% 弋, lightweight, high efficiency and low cost, make the replacement even more Power supply has become the mainstream technology of power supply. Effect 6 ^: One additional month is a simple flyback synchronous synthesizer that mainly improves the original mother case (application is: July 27, 1989: & = case blame 89 1 1 4974 ) And the simple type of flyback synchronous synchronization of the original mother case = an additional one for the source supplier (application: September 5, 1989), the current detector in two special technologies. See Figure 1. This is the main implementation circuit diagram of the simple type flyback synchronous rectifier power supply of the original mother case. For the original mother S disclosed in Figure 1, it is to provide a simple type flyback synchronous rectifier power supply. By using the function of the flyback switching circuit 2000 to use the current detector 4 00 and the synchronous rectifier circuit 3 00, the secondary coil current of the main transformer T1 is detected to control the synchronous rectification circuit. 30 0 output signal. The pulse width, and then control the working time of the synchronous switch μ, to achieve the role of synchronous conduction with the diode D2, effectively improve the power
第4頁 519790 五、發明說明（2) 源供應器之效率，並具有防 以及達成簡化連接之線路使 作成本。對於更進一步相關 閱原母案之說明書内容。 另一方面，發明人於八 之簡易型返驰式同步整流電 於原母案追加一中之所述， 及加速路徑之設計，提供同 得簡易型返馳式同步整流電 通模式中，其進一步說明煩 電源供應器追加一之說明書 然而，該原母案以及追 處，主要係由於其中使用比 使用霍耳元件作為所述電流 高了整體效率，但也增加了 為降低成本，更甚者增加其 穩定。 所以本發明追加二案即 以電阻作為負載電流偵測器 供應器。 止次級線圈電流回擊之作用， 更為容易，能有效降低製 詳細電路技術說明，則煩請參 十九年九月五日提出對原母案 源供應器追加一之申請案，對 主要係藉由一緩衝器（Buff er) 步開關快速之充放電路徑，使 源供應器能更加適用於連續導 請參閱簡易型返馳式同步整流 〇 加一兩案仍有需進一步改進之 流器（CT:即電流轉換器）以及 偵測器4 0 0之實施。其雖然提 一些成本’本發明的主要目的 雜訊之抗拒力，以使其工作更 針對此一問題，進而提出一個 之同步整流控制的返馳式電源 (二）發明之簡要說明： 本發明係提供一簡易型返驰式同步整流電源供應器之 追加二案，其主要目的係在不影響電源效率提升之情形Page 4 519790 V. Description of the invention (2) The efficiency of the source supplier, and the cost of preventing and achieving simplified connection lines. For further information, please refer to the contents of the original mother's case. On the other hand, the inventor described the additional one of the simple flyback synchronous rectifier in the original case and the design of the acceleration path to provide the same simple flyback synchronous rectification electric mode, which further A manual explaining the annoying power supply is added. However, the original case and chase are mainly due to the use of the current efficiency is higher than the use of Hall elements as the current, but also increased in order to reduce costs, and even increase It's stable. Therefore, in the second additional case of the present invention, a resistor is used as a load current detector supplier. It is easier to prevent the secondary coil current from hitting back. It can effectively reduce the detailed circuit technical description. Please refer to the application on September 5, 19 for the addition of one to the original parent source. A buffer step switch fast charging and discharging path makes the source supplier more suitable for continuous guidance. Please refer to simple flyback synchronous rectification. Plus one or two cases, there is still a need for further improvement (CT : The current converter) and the implementation of the detector 400. Although it provides some cost, the main purpose of the present invention is the resistance to noise, so that its work is more directed at this problem, and then a brief description of the invention of a flyback power supply with synchronous rectification control is provided. The second additional case of providing a simple flyback synchronous rectifier power supply is mainly for the purpose of not affecting the improvement of power efficiency.
519790 五、發明說明（3) 下’大幅降低原 〇 本發明追加 之情形下，增加 轉換器及霍耳元 本發明追加二案 形下’增加電源 器及霍耳元件作 響之缺失。 緣此，本發 維持原母案之簡 器之先前技術， 為了達成上 馳式同步整流電 流偵測器者；其 較佳者，針對原 式的間易型返驰 亦可採用本發明 較佳者，對 用導線或p c板鋼 母案使用電流轉換器或是霍珥元件之成 二案之另一目的係在不影響電源效率提升 電源供應器製作之方便性，避免使用電流 件作為電流偵測器時製作之不便。 之又一目的係在不影響電源效率提升之情 供應器雜訊抗拒力，以避免使用電流轉換 為電流偵測器時電源供應器容易受雜訊影 明追加 化設計 更能有 述之目 源供應 中所使 母案之 式同步 追加二 於本發 箔導通 二案於不增 ，較之於其 效降低製作 的，本發明 器，主要係 用之電阻係 追加一案所 整流電源供 實施例之一 明追加二中 時之電阻加 加過多之元件情形下， 他習用返馳式電源供應 成本。 追加案所述之簡易型返 以一電阻作為負載之電 採用小阻值電阻者。 述之適用於連續導通模 應器，其中電流偵測器 電阻所加以取代者。 所使用之電阻，亦可採 以取代者。 (四）發明詳細說明： 應器ί Γ明係為簡易型返馳式（Flyback)同步整流電源供 心σ σ二，主要係針對申請案第89 1 1 4974號發明案技術519790 V. Description of the invention (3) In the case of “substantially lowering the original value” 〇 In the case where the present invention is added, a converter and a Hall element are added. In the second embodiment of the present invention, the power supply and the Hall element are missing. For this reason, the present invention maintains the previous technology of the simplified device of the original case, in order to achieve the upward-synchronous synchronous rectifier current detector; the better one, the present invention can also be used for the original type of reciprocating flyback. Or, the other purpose of using a current converter or a PC board steel case to use a current converter or a Huo element is to improve the convenience of making the power supply without affecting the efficiency of the power supply, and avoid using a current piece as a current detection device. It is inconvenient to make the tester. Another purpose is to prevent the noise resistance of the power supply from affecting the efficiency of the power supply, so as to avoid the power supply from being easily affected by noise when the current is converted into a current detector. The form of the mother case in the supply is added synchronously to the case of the hair foil. The second case is not increased. Compared with the case where the efficiency is reduced, the device of the present invention is mainly used for the resistor. Yi Mingming used the flyback power supply cost when adding resistance and adding too many components in the second middle school. The simple type described in the supplementary case uses a resistor as the load for the electricity and uses a small resistance resistor. The description applies to the continuous conduction mode in which the resistance of the current detector is replaced. The resistance used can also be replaced. (IV) Detailed description of the invention: The reactor Γ is a simple Flyback synchronous rectifier power supply center σ σ2, which is mainly based on the application of the invention No. 89 1 1 4974
第6頁 519790 五、發明說明（4) 之進y的再發明，能使原母案之電源供應器的製作成太 更為降低’且電流偵測器之使用上更為方便 = 好，抗雜，能力。另一方面，針對先前追加一案之= 連續導通杈式之簡易型返馳式同步整流電源供應器之 術，亦可運用本發明诘Λ -每七斗、, 知月追加一只轭方式，也同樣能產生降低 成本、k面雜訊抗拒力之功效。 對於前兩件專利案之返馳式同步整流技術，基本上是 2用換器(CT)及霍耳元件偵測輸出電流的大小而； 从同乂::開關的動作。其中使用電流變換器及霍耳元件 、目的疋，、輸入阻抗小，輸出電流在其通過時的壓降較 2 ’肖ϋ 2功率也較少。但相對地，本發明追加二中使用 ^ , 、、J 口口而吕，刖兩案件之方便性及對雜訊 ^ 罕乂差而使用電阻其消耗的功率須然較 大，方在適當的取拾夕丁 .. ^ 捨之下，整體的效率一樣可以提升，而 本發明追加二即斜餅你 柄Μ道、s斤+ + 使用外加電阻，或者使用導線或PC板 銅泊導通時之電阻作雪、、ώ π , t n e i t t t 1乍電流偵測器為改良方法，進而獲得相 同之功率效率的提升。 煩清參閱圖二，顯-一/ m ^ ^ ^ ^ ^ ^ 因一所示係為本發明追加二案相對於 締-及—k 士、 連接不思圖。主要組成元件如同圖一 rv 、丄Μ 式切換電路2 0 0，接收一供應之電源 (Vsource)，切換出一古 ^ ^ 同頻矾號，連接至一變壓器Τ1。變 Μ态Τ1之一次側連接该 _ σ. 甘 Α ^馳式切換電路2 0 0所切換出之高頻 訊唬，其二次側為雙耠ψ ίΜ · 勺叉翰出方式，一為主電源端 (Main-source)Vm ，另一达 為次電源端（Sub-source)Vsb ;以 519790 五、發明說明（5) "一"" ----Page 6 519790 V. Description of the invention (4) The reinvention of y can make the power supply of the original case too much lower, and the use of the current detector is more convenient = good, anti Miscellaneous, ability. On the other hand, for the previously added case of = simple continuous flyback-type synchronous flyback synchronous rectifier power supply, the invention can also use the 诘 Λ-every seven buckets, and add a yoke method to the moon, It also has the effect of reducing costs and resisting k-plane noise. For the first two patents, the flyback type synchronous rectification technology basically uses 2 converters (CT) and Hall elements to detect the output current; from the same :: switch action. Among them, a current converter and a Hall element are used, the purpose is low, the input impedance is small, and the voltage drop of the output current when it passes is less than that of 2 ′ Xiaoϋ2. However, in contrast, the use of ^, ,, and J in the second additional embodiment of the present invention is convenient and the noise ^ is poor, and the power consumed by the resistor must be large in order to be appropriate. Picking up the night .. ^, the overall efficiency can be improved as well, and the second addition of the present invention is the skewer cake. You can use an external resistor, or use a wire or a PC board to conduct copper conduction. The resistance is made of snow, π, tneittt, and tneittt. The current detector is an improved method, and the same power efficiency is improved. Please refer to Fig. 2 for obvious troubles. It is obvious that -a / m ^ ^ ^ ^ ^ ^ ^ The first two cases are additional drawings of the present invention. The main components are as shown in Figure 1. The rv and μM-type switching circuit 2000 receives a supplied power source (Vsource), switches out an ancient frequency signal, and connects it to a transformer T1. The primary side of the morphing T1 is connected to this _σ. The high-frequency signal switched by the Gan A ^ chi switching circuit 2 0 0, the secondary side is a double 耠 ψ ίΜ · spoon fork output method, one is mainly Main-source Vm, the other is Sub-source Vsb; Take 519790 V. Description of Invention (5) " 一 " " ----
及設有一同步整流電路30 0，其連接於次電源端Vsb與一電 流憤’則電路4 0 0 ’而輸出為一同步驅動電壓訊號V s係連接 至一同步開關Ml之閘極端，藉以驅動同步開關M1者。所述 之同步開關Ml，則係跨接於輸出二極體…之兩端，當輸出 =極體D2導通時，能產生同步導通，使輸出二極體D2之電 流改f ’大幅減少二極體…之跨接電壓。對於輸出二極體 D2而言’其輸入端為變壓器T1二次側之主電源端Vm，其輸 出端連接負載50 0，負載50 0則並連有輸出電容Co ;以及一 電流偵測器40 0係串接於負載5〇〇，以偵測流經負載5〇〇之 電流’將偵測到之負載電流訊號轉換至該同步整流電路中 與一預沒之電流準位作比較，藉以改變同步驅動電壓v s訊 號之脈I ’進而改變同步開關之工作時間，達成同步導 通’以減少二極體之跨接電壓及切換損失。And a synchronous rectifier circuit 300 is connected to the secondary power supply terminal Vsb and a current circuit '400' and the output is a synchronous drive voltage signal V s which is connected to the gate terminal of a synchronous switch M1 to drive Synchronous switch M1. The synchronous switch M1 is connected across the two ends of the output diode, and when the output = pole D2 is turned on, synchronous conduction can be generated, so that the current of the output diode D2 is changed to f ′, which greatly reduces the pole. Body ... across the voltage. For the output diode D2, its input terminal is the main power terminal Vm on the secondary side of the transformer T1, and its output terminal is connected to a load 50 0, and a load 50 0 is connected to an output capacitor Co; and a current detector 40 0 is connected in series with the load 500 to detect the current flowing through the load 500. The detected signal of the load current is converted into the synchronous rectifier circuit and compared with a pre-existing current level to change. The pulse I of the synchronous driving voltage vs. the signal I 'then changes the working time of the synchronous switch to achieve synchronous conduction' to reduce the crossover voltage and switching loss of the diode.
本發明之主要技術，即在於使用一低阻值電阻Rs作為 電流偵測器40 0之實施例方式，採用導線或pc板銅箔導通 時之電阻代替R s也倶相同效果。雖然其消耗的功率較大， 但相對的也電路設計簡易許多。例如圖二所示之系統而 言’其電阻Rs為0 · 〇 1 Ω的電阻，則電源供應器之系統輸出 功率為60瓦，在60瓦輸出功率之下，通過Rs的最大有效電 流為1 0 A，而其有電流通過的最大時間為4 9 %，即其平均功 率為.10人\10人\0.01〇父0.49=0.49瓦，而以電晶體 FETCCEP7 0 6 0 )的導通電阻Rds為〇· 〇 1 ω為例子，則兩者功 率消耗合計0 · 9 8瓦，相對於使用整流二極體而言：1 〇 a χ 0.8Vx 0.49=3.02瓦而言，也有不少改善。The main technology of the present invention is to use a low-resistance resistor Rs as an embodiment of the current detector 400. The same effect can be achieved by replacing the resistor Rs with the resistance when a wire or a PC board copper foil is turned on. Although its power consumption is relatively large, the circuit design is relatively simple. For example, for the system shown in Figure 2, if its resistance Rs is a resistance of 0 · 〇1 Ω, the system output power of the power supply is 60 watts. Below the output power of 60 watts, the maximum effective current through Rs is 1 0 A, and the maximum time it takes to pass current is 49%, that is, its average power is .10 people \ 10 people \ 0.01〇 father 0.49 = 0.49 watts, and the on-resistance Rds of the transistor FETCCEP7 0 6 0) is 〇1 ω as an example, the total power consumption of the two is 0. 98 watts, compared with the use of rectifier diodes: 1 〇a χ 0.8Vx 0.49 = 3.02 watts, there are many improvements.
第8頁 519790 五、發明說明（6) 煩請參閱圖三，圖三所示係為本發明追加二 追加一案實施例電路連接示意圖。該追加一案主要係針斟 原母案加以改良，使原母案能更加適用於連續導通模十對 中。誠如追加一說明書所揭露之電路，相較於圖二原ς 之所示，則圖三中係多增加了緩衝器（Buffer)3i()盥、” 路徑（元件D5、C5、D6)之設置。其中所述之加速路/，逮 :端連接於主變壓器T1之次級線圈的次電源端“匕，=另」、 端連接至原母案之同步開關M1之閘極端。該加速路护主 -加速截止二極體D6與一加料通二極體的之‘相 對接（即為N極對N極相接）所連接而成，連接點為n，主 係提供給該同步開關Ml加速截止與導通之作用。里 導通二極體D5係併聯有一電容C5，係為一加速電容，= 速同步開關Ml放電之能量釋放與增加充電之速度者。口 Ξϊί ΐ所述之緩衝器310 ’主要係由一_電晶體如盥Ρ 相接而成，該p、N型電晶體Qn、卟之基極端 連接’且連接至該同步整流電路3〇〇之輸出端，以及p、 i電晶體之射極端相連接，並連接至同步開關们的閘極 ::為-同步驅動電壓訊奶。該N型電晶_ Ϊ 速截止二極體D6與一加速導通二_所相 十接之連接，即為與加速路徑相連接，而p型電晶 之集極端則連接於琴於屮一朽㈣Μ 日曰- 衝器310之設置。輸出一極體D^P極端，如此完成緩 、，如上述圖二電路所示，其中係由加速導通二極體D5與 所併聯之電谷C5，以及所連接之緩衝器31()中的N型電晶^ 第9頁 519790 五、發明說明（7) -------- ^ί至該同步開關M1之閘極端而形成一同步開關之快速 路徑。另一方面，係、由該加速截止二極體D6以及 二同牛2 —極體所併聯之電容C5等兩元件連接，而形成 ^步開關之快速放雷哉.L妨^ 同步開關之快速放電截止路徑。 孫、查ί 1卜，圖三所揭示之電路中，該同步驅動電壓訊號。 接於鈐Ψ同步開關们。該同步開關M1之汲源極，同樣係跨 =極體D2之…當輸出二極體D2導通時，能產 幅減小鈐!Γ ^作用使輸出二極體D 2之電流改道，能夠大 D2，，i二極體之跨接電墨。此外，該輸出二極體 端電们=極端)、為該主變屋器T1次級線圈之主電源 則並連J有二^ f端連接負載端（L〇ad) 5 0 0，該負載端500 Hin容c〇者。以及圖三之負載端5。〇係串接 到之負載1電用:偵測流經負載之電流，將伯測 整流電電壓’並且連接至同步 變同步驅動電壓訊號Vs之電^位進作而比^’藉以進一步改 作時間…可以減少同步同步開_之工 跨接電壓以及元件切換及導通損 U二極體D2上的 易電路之電源供應器。 /成為一咼效率、簡 # 而本發明追加二案相對於該一 即在於使用一低阻值電阻。作=力&案之主要差異處， 以，我們可以报清楚地看出使用外者。所 很容易達到我們的要求’我們也 谓測電阻是可以 採用導線或PC板銅猪導通時之電阻^ :有效的方法，即 管外加電阻Rs作電流 第10頁 519790 五、發明說明（8) 偵測器，其可以有效降低成本，其增加了電阻消耗而提高 了整體效率，對生產者而言，生產更容易，成本更低。 煩請參閱圖四，圖四係為本發明追加二實施例中， 二步配合圖三之操作於連續導通模式下的波形示意圖。复 中當時間為％時，初級線圈電壓Vin為正電壓，該返驰 =換電路200對主變Μ ϋΠ充電。此時，初級線圈電流；;n ;由，而：漸線性遞增，此外’次級線圈總電流“為〇 J。虽到達吋間tl時，該返馳式切換電路2〇 =，使電JHn立即變成0值。此時電流“成為J之為後 =直至時間”，該返馳式切換電路2。。再二门主變開 复态T1充電，這日寸電流I丨n會又變 ,, 增，如此週而復始。 k為Ιπηη而漸漸線性遞 綜上所述，本發明之一簡 應器追加二，能夠提供一低價 功率消耗之返馳式電源供應器 及功效上均深富實施之進步性 為目前市面上前所未見之新發 件，爰依法提出申請。 唯以上所述者，僅為本發 月色以之限定本發明所實施之範 利範圍所作之均等變化與修錦 蓋之範圍内，謹請貴審查委 易型返驰式同步整流電源供 位、線路設計簡單以及減少 。充份顯示出本發明之目的 ’極具產業之利用價值，且 明，完全符合發明專利之要 明之較佳實施例而已，當不 圍。即大凡依本發明申請專 ’皆應仍屬於本發明專利涵 員明鑑，並祈惠准，是所至Page 8 519790 V. Description of the invention (6) Please refer to FIG. 3, which is a schematic diagram of the circuit connection of the embodiment of the second and the second embodiment of the present invention. This additional case is mainly to improve the original mother case, so that the original mother case can be more suitable for ten pairs of continuous conduction molds. Just as the circuit disclosed in the description is added, compared with the original picture shown in Figure 2, the buffer (3) (buffer) 3i (), the path (elements D5, C5, D6) are added in Figure 3. The accelerating circuit mentioned above is connected to the secondary power terminal of the secondary winding of the main transformer T1, "Dagger, = other", and the terminal is connected to the gate end of the synchronous switch M1 of the original case. The acceleration road protection main-acceleration cut-off diode D6 is connected to the 'opposite connection' of a feed-through diode (that is, N pole to N pole connection), the connection point is n, and the main system provides the The synchronous switch M1 accelerates the cut-off and conduction effects. Here, the conducting diode D5 is connected in parallel with a capacitor C5, which is an accelerating capacitor, = the energy released by the speed-synchronous switch M1 and the speed of charging is increased. The buffer 310 described in the mouth is mainly composed of a transistor such as P, which is connected to the p, N-type transistor Qn and the base of the porosity, and is connected to the synchronous rectifier circuit 300. The output terminal and the emitter terminals of the p and i transistors are connected and connected to the gates of the synchronous switches :::-synchronous driving voltage. The connection of the N-type transistor _ 截止 fast-cut diode D6 and an accelerated conduction diode _ is connected to the acceleration path, and the set terminal of the p-type transistor is connected to the piano. ㈣Ｍ 日 日-Punch 310 settings. Output a pole D ^ P extreme, so complete slowly, as shown in the circuit of Figure 2 above, where the diode D5 and the valley C5 connected in parallel are accelerated by the diode D5 and the connected buffer 31 (). N-type transistor ^ Page 9 519790 V. Description of the invention (7) -------- ^ To the gate extreme of the synchronous switch M1 to form a fast path of the synchronous switch. On the other hand, the two components, such as the capacitor C5 connected in parallel by the accelerated cut-off diode D6 and the two same-pole 2 poles, are connected to form a fast lightning release step switch. Discharge cut-off path. Sun, Zha 1 Bu, the synchronous drive voltage signal in the circuit disclosed in Figure 3. Connected to the 钤 Ψ sync switches. The drain source of the synchronous switch M1 is also the same as that of the pole D2 ... When the output diode D2 is turned on, the output amplitude is reduced. Γ ^ ^ The effect is to redirect the current of the output diode D 2 to be large. D2 ,, i diode across the electric ink. In addition, the output diode terminals are extreme), and the main power supply for the T1 secondary coil of the main transformer house is connected in parallel with J ^ f terminal connected to the load terminal (L0ad) 50 0, the load End 500 Hin capacity c〇 者. And the load end 5 in Figure 3. 〇 Series 1 connected to load 1 for electrical use: Detect the current flowing through the load, connect the measured rectified electrical voltage 'and connect it to the synchronous variable synchronous drive voltage signal Vs. … The power supply of the easy circuit on the U diode D2 that can reduce the voltage across the synchronous switch and the switching and conduction loss of the components. / 为 一 咼 效应 ， 简 # The second addition to the present invention is to use a low resistance resistor compared to the first. The main difference in the case of the Force = Force & case is that we can clearly report the use of outsiders. It is very easy to meet our requirements. 'We also said that the resistance can be measured using a wire or a PC board copper pig when it is on. ^: An effective method, that is, the external resistance of the tube Rs for current. Detectors, which can effectively reduce costs, increase resistance consumption and improve overall efficiency. For producers, production is easier and costs are lower. Please refer to FIG. 4. FIG. 4 is a waveform diagram of the second embodiment in accordance with the present invention in which the two steps cooperate with the operation of FIG. 3 in the continuous conduction mode. When the recovery time is%, the primary coil voltage Vin is a positive voltage, and this flyback = the switching circuit 200 charges the main transformer M ϋΠ. At this time, the current of the primary coil; n; and: gradually increasing linearly, and in addition, the total current of the secondary coil is 0J. Although reaching the interval t1, the flyback switching circuit 20 =, so that the electric JHn The value immediately becomes 0. At this time, the current "after J becomes = until time", the flyback switching circuit 2. Then the second gate is turned on and the state T1 is charged, and the current I 丨 n will change again on that day. , Increase, and so on. K is Ιπηη and gradually linearly recurs. As described above, the additional one of the present invention can provide a low-cost power consumption flyback power supply and its performance is richly implemented. Progressiveness is a new submission that has not been seen on the market before, and the application is made in accordance with the law. Only the above mentioned are only equivalent changes and revisions made by this issue to limit the scope of the implementation of the invention. Within the scope of this cover, I would like to ask you to review the supply of easy-to-use flyback synchronous rectifier power supply, simple circuit design and reduction. It fully shows that the purpose of the present invention is of great industrial use value, and it is clear that it fully meets the invention patent The preferred embodiment is only clear, when Wai. Generally i.e. under this invention is designed to apply 'all should still belong to the present invention, the public will see Patent bypass member, and quasi pray benefits, is Suozhi
519790 五、發明說明（9) 禱0 111·· 519790 圖式簡單說明 圖^為原母案第89114974號申請案之主要電路元件連接 圖"一係為本發日Ηi - 示意圖。追加二案相對於原母案之實施例電路連接 圖二係為本發明追- 示意圖。 —案相對於追加一案實施例電路連接 圖四係為本發明诘 _ — 模式下的波形例配合圖三之操作於連續導通 圖號說明：519790 V. Description of the invention (9) Prayer 0 111 ·· 519790 Brief description of the drawings Figure ^ shows the connection of the main circuit components of the original mother application No. 89114974. " A series of schematic diagrams of this issue. Circuit connection of the embodiment of the second additional case compared to the original mother case Figure 2 is a schematic diagram of the invention. —The case is related to the circuit connection of the embodiment of the additional case. FIG. 4 is an example of the waveform in the mode of the present invention _ _ — in conjunction with the operation of FIG. 3 for continuous conduction.
3 0 0 同步整流電路 4 0 0電流偵測器 Dl、D3 二極體 D6 加速截止二極體 Cl、C2、C5 電容 Vsource 供應之電源 I f 迴授電流 II 總電流 D2輸出二極體 Vf 迴授電壓 Vm主電源端 Qn N型電晶體3 0 0 Synchronous rectifier circuit 4 0 Current detector D1, D3 Diode D6 Acceleration cut-off diode Cl, C2, C5 Power supply from capacitor Vsource I f Feedback current II Total current D2 Output diode Vf Back Supply voltage Vm Qn N-type transistor
2 0 0 返馳式切換電路 31 〇緩衝器 5 〇 〇負載 Τ1主變壓器 D5 加速導通二極體2 0 0 Flyback switching circuit 31 〇 Buffer 5 〇 〇 Load Τ1 Main transformer D5 Accelerated conduction diode
Isb 次電流Isb current
Vs同步驅動電壓訊號 V i η 初級線圈電壓 I m主電流Vs Synchronous driving voltage signal V i η Primary coil voltage I m Main current
Ml同步開關 co輸出濾波電容Ml synchronous switch co output filter capacitor
Vsb次級線圈之次電源端Vsb secondary coil secondary power terminal
Qp P型電晶體Qp P-type transistor
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW089114974A TW497327B (en) | 2000-07-27 | 2000-07-27 | Simple flyback synchronous rectifier power supply |
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| TW519790B true TW519790B (en) | 2003-02-01 |
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| TW089114974A TW497327B (en) | 2000-07-27 | 2000-07-27 | Simple flyback synchronous rectifier power supply |
| TW089114974A TW519789B (en) | 2000-07-27 | 2000-09-05 | Simplified fly-back synchronous rectifying power supply |
| TW089114974A TW519790B (en) | 2000-07-27 | 2001-02-21 | Simplified fly-back synchronous rectifying power supply |
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| TW089114974A TW497327B (en) | 2000-07-27 | 2000-07-27 | Simple flyback synchronous rectifier power supply |
| TW089114974A TW519789B (en) | 2000-07-27 | 2000-09-05 | Simplified fly-back synchronous rectifying power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI427909B (en) * | 2010-06-21 | 2014-02-21 | Niko Semiconductor Co Ltd | Flyback power converter with multi-output and a secondary side post regulator thereof |
| TWI487093B (en) * | 2004-05-14 | 2015-06-01 | Renesas Electronics Corp | Manufacturing method of semiconductor integrated circuit device |
Families Citing this family (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6487095B1 (en) * | 2001-10-31 | 2002-11-26 | International Business Machines Corporation | Multiphase zero-volt-switching resonant DC-DC regulator |
| US6442048B1 (en) * | 2001-12-18 | 2002-08-27 | Lite-On Electronics, Inc. | Flyback converter with synchronous rectifying function |
| US20040125621A1 (en) * | 2002-12-30 | 2004-07-01 | Ta-Yung Yang | Synchronous rectifier of flyback power converter |
| US6967585B2 (en) * | 2003-05-30 | 2005-11-22 | Adc Dsl Systems, Inc. | Input voltage sense circuit in a line powered network element |
| TWI220084B (en) * | 2003-06-09 | 2004-08-01 | Acbel Polytech Inc | Synchronous rectifying power converter controlled by current transformer |
| US6809939B1 (en) * | 2003-07-28 | 2004-10-26 | Niko Semiconductor Co., Ltd. | Synchronous rectifying control circuit of flyback switching power supply |
| DE10339470A1 (en) * | 2003-08-27 | 2005-03-31 | Friwo Mobile Power Gmbh | Control circuit for a switching power supply |
| US8134851B2 (en) * | 2003-11-04 | 2012-03-13 | International Rectifier Corporation | Secondary side synchronous rectifier for resonant converter |
| KR100593926B1 (en) | 2004-10-07 | 2006-06-30 | 삼성전기주식회사 | Flyback converter with synchronous rectifier |
| KR100568319B1 (en) * | 2004-10-22 | 2006-04-05 | 삼성전기주식회사 | Flyback converter with synchronous rectifier |
| JP4315097B2 (en) * | 2004-11-19 | 2009-08-19 | サンケン電気株式会社 | Switching power supply |
| FI20050094A0 (en) * | 2005-01-28 | 2005-01-28 | Vacon Oyj | power Source |
| TWI289971B (en) * | 2005-11-01 | 2007-11-11 | Asustek Comp Inc | Boost converter and boost conversion method |
| US7764516B2 (en) * | 2008-02-21 | 2010-07-27 | System General Corporation | Method and apparatus of providing synchronous regulation circuit for offline power converter |
| US8711593B2 (en) | 2008-08-20 | 2014-04-29 | ConvenientPower HK Ltd. | Generalized AC-DC synchronous rectification techniques for single- and multi-phase systems |
| US8942018B2 (en) * | 2008-08-20 | 2015-01-27 | ConvenientPower HK Ltd. | Single-phase self-driven full-bridge synchronous rectification |
| WO2010020913A1 (en) * | 2008-08-21 | 2010-02-25 | Nxp B.V. | Electrical power converters and methods of operation |
| WO2010047711A1 (en) * | 2008-10-23 | 2010-04-29 | Leach International | System and method for emulating an ideal diode in a power control device |
| US7876584B2 (en) * | 2009-06-24 | 2011-01-25 | Alpha And Omega Semiconductor Incorporated | Circuit and method for controlling the secondary FET of transformer coupled synchronous rectified flyback converter |
| TWI410031B (en) * | 2009-08-26 | 2013-09-21 | Univ Nat Taiwan Science Tech | Apparatus and method for changing operation mode according to load |
| US8699242B2 (en) * | 2010-04-29 | 2014-04-15 | Convergent Capital Partners Ii, L.P. | Synchronous drive circuit for variable frequency resonant converters |
| US8681514B2 (en) | 2011-01-10 | 2014-03-25 | Integrated Device Technology, Inc. | Controller for secondary side control of a switch, power converter, and related synchronous rectification control method |
| EP2493063B1 (en) | 2011-02-24 | 2014-07-09 | DET International Holding Limited | Multiple use of a current transformer |
| JP5691712B2 (en) * | 2011-03-23 | 2015-04-01 | サンケン電気株式会社 | Constant current power supply |
| GB2509009B (en) * | 2011-08-30 | 2016-03-09 | Ge Aviat Systems Ltd | Power distribution in aircraft |
| TWI481171B (en) * | 2011-12-07 | 2015-04-11 | Acbel Polytech Inc | Exchange power supply with low sense current and its current sensing module |
| TWI458233B (en) * | 2013-01-07 | 2014-10-21 | Richtek Technology Corp | Switch power conversion device |
| US9331587B2 (en) * | 2013-01-22 | 2016-05-03 | Power Integrations, Inc. | Power converter controller with multiple power sources |
| CN105099230B (en) * | 2014-04-16 | 2018-07-31 | 华为技术有限公司 | Controlled resonant converter and its synchronous rectification translation circuit |
| US9882500B2 (en) * | 2014-12-07 | 2018-01-30 | Alpha & Omega Semiconductor (Cayman), Ltd. | Power supply device |
| CN105245094B (en) * | 2015-11-13 | 2018-06-19 | 航天科工惯性技术有限公司 | A kind of counter exciting synchronous rectification control method |
| US9912245B2 (en) * | 2016-02-29 | 2018-03-06 | Toyota Motor Engineering & Manufacturing North America, Inc. | Synchronous rectifier control method for a non-isolated DC/DC converter having a transformer with cross connected capacitors |
| US10291136B2 (en) | 2017-04-10 | 2019-05-14 | Delta Electronics (Shanghai) Co., Ltd | Control device and control method |
| CN108696133B (en) * | 2017-04-10 | 2020-02-28 | 台达电子企业管理（上海）有限公司 | Control device and control method |
| CN110247553B (en) | 2018-03-09 | 2020-11-06 | 台达电子工业股份有限公司 | Converter and control method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5757626A (en) * | 1996-06-21 | 1998-05-26 | Delta Electronics Inc. | Single-stage, single-switch, islolated power-supply technique with input-current shaping and fast output-voltage regulation |
| US5991171A (en) * | 1998-02-05 | 1999-11-23 | Pi Electronics (H.K.) Ltd. | DC-to-DC converters |
| JP3673075B2 (en) * | 1998-03-09 | 2005-07-20 | 新電元工業株式会社 | Switching power supply |
| JP3339452B2 (en) * | 1999-03-05 | 2002-10-28 | 株式会社村田製作所 | Isolated DC-DC converter |
| US6246593B1 (en) * | 1999-05-06 | 2001-06-12 | Astec International Limited | Topology-independent synchronous rectifier commutation circuit |
-
2000
- 2000-07-27 TW TW089114974A patent/TW497327B/en not_active IP Right Cessation
- 2000-09-05 TW TW089114974A patent/TW519789B/en not_active IP Right Cessation
-
2001
- 2001-02-21 TW TW089114974A patent/TW519790B/en not_active IP Right Cessation
- 2001-03-21 US US09/812,585 patent/US6353544B1/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI487093B (en) * | 2004-05-14 | 2015-06-01 | Renesas Electronics Corp | Manufacturing method of semiconductor integrated circuit device |
| TWI427909B (en) * | 2010-06-21 | 2014-02-21 | Niko Semiconductor Co Ltd | Flyback power converter with multi-output and a secondary side post regulator thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| US6353544B1 (en) | 2002-03-05 |
| TW497327B (en) | 2002-08-01 |
| TW519789B (en) | 2003-02-01 |
| US20020021577A1 (en) | 2002-02-21 |
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